chore: define interfaces for file and project generation

modulegen/cmd/modules/example.go

@@ -11,14 +11,14 @@ var newExampleCmd = &cobra.Command{
 	Short: "Create a new Example",
 	Long:  "Create a new Example",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return internal.Generate(*exampleVar, false)
+		return internal.Generate(*tcModuleVar, false)
 	},
 }
 
 func init() {
-	newExampleCmd.Flags().StringVarP(&exampleVar.Name, nameFlag, "n", "", "Name of the example. Only alphabetical characters are allowed.")
-	newExampleCmd.Flags().StringVarP(&exampleVar.NameTitle, titleFlag, "t", "", "(Optional) Title of the example name, used to override the name in the case of mixed casing (Mongodb -> MongoDB). Use camel-case when needed. Only alphabetical characters are allowed.")
-	newExampleCmd.Flags().StringVarP(&exampleVar.Image, imageFlag, "i", "", "Fully-qualified name of the Docker image to be used by the example")
+	newExampleCmd.Flags().StringVarP(&tcModuleVar.Name, nameFlag, "n", "", "Name of the example. Only alphabetical characters are allowed.")
+	newExampleCmd.Flags().StringVarP(&tcModuleVar.NameTitle, titleFlag, "t", "", "(Optional) Title of the example name, used to override the name in the case of mixed casing (Mongodb -> MongoDB). Use camel-case when needed. Only alphabetical characters are allowed.")
+	newExampleCmd.Flags().StringVarP(&tcModuleVar.Image, imageFlag, "i", "", "Fully-qualified name of the Docker image to be used by the example")
 
 	_ = newExampleCmd.MarkFlagRequired(imageFlag)
 	_ = newExampleCmd.MarkFlagRequired(nameFlag)

modulegen/cmd/modules/main.go

@@ -6,7 +6,7 @@ import (
 	"github.com/testcontainers/testcontainers-go/modulegen/internal/context"
 )
 
-var exampleVar = &context.ExampleVar{}
+var tcModuleVar = &context.TestcontainersModuleVar{}
 
 var NewCmd = &cobra.Command{
 	Use:   "new",

modulegen/cmd/modules/module.go

@@ -11,14 +11,14 @@ var newModuleCmd = &cobra.Command{
 	Short: "Create a new Module",
 	Long:  "Create a new Module",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return internal.Generate(*exampleVar, true)
+		return internal.Generate(*tcModuleVar, true)
 	},
 }
 
 func init() {
-	newModuleCmd.Flags().StringVarP(&exampleVar.Name, nameFlag, "n", "", "Name of the module. Only alphabetical characters are allowed.")
-	newModuleCmd.Flags().StringVarP(&exampleVar.NameTitle, titleFlag, "t", "", "(Optional) Title of the module name, used to override the name in the case of mixed casing (Mongodb -> MongoDB). Use camel-case when needed. Only alphabetical characters are allowed.")
-	newModuleCmd.Flags().StringVarP(&exampleVar.Image, imageFlag, "i", "", "Fully-qualified name of the Docker image to be used by the module")
+	newModuleCmd.Flags().StringVarP(&tcModuleVar.Name, nameFlag, "n", "", "Name of the module. Only alphabetical characters are allowed.")
+	newModuleCmd.Flags().StringVarP(&tcModuleVar.NameTitle, titleFlag, "t", "", "(Optional) Title of the module name, used to override the name in the case of mixed casing (Mongodb -> MongoDB). Use camel-case when needed. Only alphabetical characters are allowed.")
+	newModuleCmd.Flags().StringVarP(&tcModuleVar.Image, imageFlag, "i", "", "Fully-qualified name of the Docker image to be used by the module")
 
 	_ = newModuleCmd.MarkFlagRequired(imageFlag)
 	_ = newModuleCmd.MarkFlagRequired(nameFlag)

modulegen/context_test.go

@@ -97,7 +97,7 @@ func TestModulesHasDependabotEntry(t *testing.T) {
 	}
 }
 
-func getTestRootContext(t *testing.T) *context.Context {
+func getTestRootContext(t *testing.T) context.Context {
 	current, err := os.Getwd()
 	require.NoError(t, err)
 	return context.New(filepath.Dir(current))

modulegen/internal/context/cmd.go

@@ -1,6 +1,6 @@
 package context
 
-type ExampleVar struct {
+type TestcontainersModuleVar struct {
 	Name      string
 	NameTitle string
 	Image     string

modulegen/internal/context/context.go

@@ -10,27 +10,27 @@ type Context struct {
 	RootDir string
 }
 
-func (ctx *Context) DependabotConfigFile() string {
+func (ctx Context) DependabotConfigFile() string {
 	return filepath.Join(ctx.GithubDir(), "dependabot.yml")
 }
 
-func (ctx *Context) DocsDir() string {
+func (ctx Context) DocsDir() string {
 	return filepath.Join(ctx.RootDir, "docs")
 }
 
-func (ctx *Context) GithubDir() string {
+func (ctx Context) GithubDir() string {
 	return filepath.Join(ctx.RootDir, ".github")
 }
 
-func (ctx *Context) GithubWorkflowsDir() string {
+func (ctx Context) GithubWorkflowsDir() string {
 	return filepath.Join(ctx.GithubDir(), "workflows")
 }
 
-func (ctx *Context) GoModFile() string {
+func (ctx Context) GoModFile() string {
 	return filepath.Join(ctx.RootDir, "go.mod")
 }
 
-func (ctx *Context) getModulesByBaseDir(baseDir string) ([]string, error) {
+func (ctx Context) getModulesByBaseDir(baseDir string) ([]string, error) {
 	dir := filepath.Join(ctx.RootDir, baseDir)
 
 	allFiles, err := os.ReadDir(dir)
@@ -49,7 +49,7 @@ func (ctx *Context) getModulesByBaseDir(baseDir string) ([]string, error) {
 	return dirs, nil
 }
 
-func (ctx *Context) getMarkdownsFromDir(baseDir string) ([]string, error) {
+func (ctx Context) getMarkdownsFromDir(baseDir string) ([]string, error) {
 	dir := filepath.Join(ctx.DocsDir(), baseDir)
 
 	allFiles, err := os.ReadDir(dir)
@@ -68,38 +68,38 @@ func (ctx *Context) getMarkdownsFromDir(baseDir string) ([]string, error) {
 	return dirs, nil
 }
 
-func (ctx *Context) GetExamples() ([]string, error) {
+func (ctx Context) GetExamples() ([]string, error) {
 	return ctx.getModulesByBaseDir("examples")
 }
 
-func (ctx *Context) GetModules() ([]string, error) {
+func (ctx Context) GetModules() ([]string, error) {
 	return ctx.getModulesByBaseDir("modules")
 }
 
-func (ctx *Context) GetExamplesDocs() ([]string, error) {
+func (ctx Context) GetExamplesDocs() ([]string, error) {
 	return ctx.getMarkdownsFromDir("examples")
 }
 
-func (ctx *Context) GetModulesDocs() ([]string, error) {
+func (ctx Context) GetModulesDocs() ([]string, error) {
 	return ctx.getMarkdownsFromDir("modules")
 }
 
-func (ctx *Context) MkdocsConfigFile() string {
+func (ctx Context) MkdocsConfigFile() string {
 	return filepath.Join(ctx.RootDir, "mkdocs.yml")
 }
 
-func (ctx *Context) VSCodeWorkspaceFile() string {
+func (ctx Context) VSCodeWorkspaceFile() string {
 	return filepath.Join(ctx.RootDir, ".vscode", ".testcontainers-go.code-workspace")
 }
 
-func New(dir string) *Context {
-	return &Context{RootDir: dir}
+func New(dir string) Context {
+	return Context{RootDir: dir}
 }
 
-func GetRootContext() (*Context, error) {
+func GetRootContext() (Context, error) {
 	current, err := os.Getwd()
 	if err != nil {
-		return nil, err
+		return Context{}, err
 	}
 	return New(filepath.Dir(current)), nil
 }

modulegen/internal/context/types.go

@@ -11,25 +11,25 @@ import (
 	"golang.org/x/text/language"
 )
 
-type Example struct {
+type TestcontainersModule struct {
 	Image     string // fully qualified name of the Docker image
-	IsModule  bool   // if true, the example will be generated as a Go module
+	IsModule  bool   // if true, the module will be generated as a Go module, otherwise an example
 	Name      string
-	TitleName string // title of the name: e.g. "mongodb" -> "MongoDB"
+	TitleName string // title of the name: m.g. "mongodb" -> "MongoDB"
 	TCVersion string // Testcontainers for Go version
 }
 
 // ContainerName returns the name of the container, which is the lower-cased title of the example
 // If the title is set, it will be used instead of the name
-func (e *Example) ContainerName() string {
-	name := e.Lower()
+func (m *TestcontainersModule) ContainerName() string {
+	name := m.Lower()
 
-	if e.IsModule {
-		name = e.Title()
+	if m.IsModule {
+		name = m.Title()
 	} else {
-		if e.TitleName != "" {
-			r, n := utf8.DecodeRuneInString(e.TitleName)
-			name = string(unicode.ToLower(r)) + e.TitleName[n:]
+		if m.TitleName != "" {
+			r, n := utf8.DecodeRuneInString(m.TitleName)
+			name = string(unicode.ToLower(r)) + m.TitleName[n:]
 		}
 	}
 
@@ -38,48 +38,48 @@ func (e *Example) ContainerName() string {
 
 // Entrypoint returns the name of the entrypoint function, which is the lower-cased title of the example
 // If the example is a module, the entrypoint will be "RunContainer"
-func (e *Example) Entrypoint() string {
-	if e.IsModule {
+func (m *TestcontainersModule) Entrypoint() string {
+	if m.IsModule {
 		return "RunContainer"
 	}
 
 	return "runContainer"
 }
 
-func (e *Example) Lower() string {
-	return strings.ToLower(e.Name)
+func (m *TestcontainersModule) Lower() string {
+	return strings.ToLower(m.Name)
 }
 
-func (e *Example) ParentDir() string {
-	if e.IsModule {
+func (m *TestcontainersModule) ParentDir() string {
+	if m.IsModule {
 		return "modules"
 	}
 
 	return "examples"
 }
 
-func (e *Example) Title() string {
-	if e.TitleName != "" {
-		return e.TitleName
+func (m *TestcontainersModule) Title() string {
+	if m.TitleName != "" {
+		return m.TitleName
 	}
 
-	return cases.Title(language.Und, cases.NoLower).String(e.Lower())
+	return cases.Title(language.Und, cases.NoLower).String(m.Lower())
 }
 
-func (e *Example) Type() string {
-	if e.IsModule {
+func (m *TestcontainersModule) Type() string {
+	if m.IsModule {
 		return "module"
 	}
 	return "example"
 }
 
-func (e *Example) Validate() error {
-	if !regexp.MustCompile(`^[A-Za-z][A-Za-z0-9]*$`).MatchString(e.Name) {
-		return fmt.Errorf("invalid name: %s. Only alphanumerical characters are allowed (leading character must be a letter)", e.Name)
+func (m *TestcontainersModule) Validate() error {
+	if !regexp.MustCompile(`^[A-Za-z][A-Za-z0-9]*$`).MatchString(m.Name) {
+		return fmt.Errorf("invalid name: %s. Only alphanumerical characters are allowed (leading character must be a letter)", m.Name)
 	}
 
-	if !regexp.MustCompile(`^[A-Za-z][A-Za-z0-9]*$`).MatchString(e.TitleName) {
-		return fmt.Errorf("invalid title: %s. Only alphanumerical characters are allowed (leading character must be a letter)", e.TitleName)
+	if !regexp.MustCompile(`^[A-Za-z][A-Za-z0-9]*$`).MatchString(m.TitleName) {
+		return fmt.Errorf("invalid title: %s. Only alphanumerical characters are allowed (leading character must be a letter)", m.TitleName)
 	}
 
 	return nil

modulegen/internal/dependabot/main.go

@@ -1,21 +1,35 @@
 package dependabot
 
-import (
-	"github.com/testcontainers/testcontainers-go/modulegen/internal/context"
-)
-
-// update examples in dependabot
-func GenerateDependabotUpdates(ctx *context.Context, example context.Example) error {
-	directory := "/" + example.ParentDir() + "/" + example.Lower()
-	return UpdateConfig(ctx.DependabotConfigFile(), directory, "gomod")
-}
+import "github.com/testcontainers/testcontainers-go/modulegen/internal/context"
+
+type Generator struct{}
+
+// AddModule update dependabot with the new module
+func (g Generator) AddModule(ctx context.Context, m context.TestcontainersModule) error {
+	configFile := ctx.DependabotConfigFile()
 
-func UpdateConfig(configFile string, directory string, packageEcosystem string) error {
 	config, err := readConfig(configFile)
 	if err != nil {
 		return err
 	}
+
+	packageEcosystem := "gomod"
+	directory := "/" + m.ParentDir() + "/" + m.Lower()
+
 	config.addUpdate(newUpdate(directory, packageEcosystem))
+
+	return writeConfig(configFile, config)
+}
+
+// Generate generates dependabot config file from source
+func (g Generator) Generate(ctx context.Context) error {
+	configFile := ctx.DependabotConfigFile()
+
+	config, err := readConfig(configFile)
+	if err != nil {
+		return err
+	}
+
 	return writeConfig(configFile, config)
 }